[Bug 1213173] Re: Does not handle 802.1Q tagged frames correctly
If it IS an issue with the kernel building a new version of libpcap and tcpdump will not help. If it's an issue with the kernel changing the way it handles VLAN tags - i.e., whether it leaves them in the packet data, so that the filter code in the kernel sees them as part of the packet data, or whether it removes them and puts them into metadata that has to be tested specially by a BPF program - then a new version of libpcap *could* help, as libpcap was recently changed to deal with that problem. -- You received this bug notification because you are a member of Ubuntu Server Team, which is subscribed to libpcap in Ubuntu. https://bugs.launchpad.net/bugs/1213173 Title: Does not handle 802.1Q tagged frames correctly To manage notifications about this bug go to: https://bugs.launchpad.net/ubuntu/+source/libpcap/+bug/1213173/+subscriptions -- Ubuntu-server-bugs mailing list Ubuntu-server-bugs@lists.ubuntu.com Modify settings or unsubscribe at: https://lists.ubuntu.com/mailman/listinfo/ubuntu-server-bugs
[Bug 1213173] Re: Does not handle 802.1Q tagged frames correctly
Hello! I've installed kernel 2.6.38-16-generic and still have the same error. So is it really an issue with the kernel? If it IS an issue with the kernel building a new version of libpcap and tcpdump will not help. So I might have to set up a System with 10.04 to verify... -- You received this bug notification because you are a member of Ubuntu Server Team, which is subscribed to libpcap in Ubuntu. https://bugs.launchpad.net/bugs/1213173 Title: Does not handle 802.1Q tagged frames correctly To manage notifications about this bug go to: https://bugs.launchpad.net/ubuntu/+source/libpcap/+bug/1213173/+subscriptions -- Ubuntu-server-bugs mailing list Ubuntu-server-bugs@lists.ubuntu.com Modify settings or unsubscribe at: https://lists.ubuntu.com/mailman/listinfo/ubuntu-server-bugs
[Bug 1213173] Re: Does not handle 802.1Q tagged frames correctly
What happens if you build a shiny new version of libpcap from the GitHub repository: https://github.com/the-tcpdump-group/libpcap/ and then build a shiny new version of tcpdump: https://github.com/the-tcpdump-group/tcpdump with it? -- You received this bug notification because you are a member of Ubuntu Server Team, which is subscribed to libpcap in Ubuntu. https://bugs.launchpad.net/bugs/1213173 Title: Does not handle 802.1Q tagged frames correctly To manage notifications about this bug go to: https://bugs.launchpad.net/ubuntu/+source/libpcap/+bug/1213173/+subscriptions -- Ubuntu-server-bugs mailing list Ubuntu-server-bugs@lists.ubuntu.com Modify settings or unsubscribe at: https://lists.ubuntu.com/mailman/listinfo/ubuntu-server-bugs
[Bug 1213173] Re: Does not handle 802.1Q tagged frames correctly
I've got the same bug. Additional information: If I use the vlan tag in the capture filter I only see frames with stacked vlans. If I use vlan 1 I will only see frames with vöan 1 as the inner tag. More: The vlan information in the frame I capture is at location ether[14,2]. If I filter on that location the frames are filtered at [18,2] although I did not have any vlan in the capture filter string. It seems that there is in implicit vlan tag in the capture filter. that produces an offset within the frame if a (n outer) vlan is present! -- You received this bug notification because you are a member of Ubuntu Server Team, which is subscribed to libpcap in Ubuntu. https://bugs.launchpad.net/bugs/1213173 Title: Does not handle 802.1Q tagged frames correctly To manage notifications about this bug go to: https://bugs.launchpad.net/ubuntu/+source/libpcap/+bug/1213173/+subscriptions -- Ubuntu-server-bugs mailing list Ubuntu-server-bugs@lists.ubuntu.com Modify settings or unsubscribe at: https://lists.ubuntu.com/mailman/listinfo/ubuntu-server-bugs
[Bug 1213173] Re: Does not handle 802.1Q tagged frames correctly
Still there. Seems to be an issue with the 3.x kernels. Bug does not exhibit in 2.6.x kernels -- You received this bug notification because you are a member of Ubuntu Server Team, which is subscribed to libpcap in Ubuntu. https://bugs.launchpad.net/bugs/1213173 Title: Does not handle 802.1Q tagged frames correctly To manage notifications about this bug go to: https://bugs.launchpad.net/ubuntu/+source/libpcap/+bug/1213173/+subscriptions -- Ubuntu-server-bugs mailing list Ubuntu-server-bugs@lists.ubuntu.com Modify settings or unsubscribe at: https://lists.ubuntu.com/mailman/listinfo/ubuntu-server-bugs
[Bug 1213173] Re: Does not handle 802.1Q tagged frames correctly
Using tcpdump, you can clearly see the differences -- You received this bug notification because you are a member of Ubuntu Server Team, which is subscribed to libpcap in Ubuntu. https://bugs.launchpad.net/bugs/1213173 Title: Does not handle 802.1Q tagged frames correctly To manage notifications about this bug go to: https://bugs.launchpad.net/ubuntu/+source/libpcap/+bug/1213173/+subscriptions -- Ubuntu-server-bugs mailing list Ubuntu-server-bugs@lists.ubuntu.com Modify settings or unsubscribe at: https://lists.ubuntu.com/mailman/listinfo/ubuntu-server-bugs
[Bug 1213173] Re: Does not handle 802.1Q tagged frames correctly
can you please try again with 14.04? 12.04 has a slightly outdated pcap version... thanks! -- You received this bug notification because you are a member of Ubuntu Server Team, which is subscribed to libpcap in Ubuntu. https://bugs.launchpad.net/bugs/1213173 Title: Does not handle 802.1Q tagged frames correctly To manage notifications about this bug go to: https://bugs.launchpad.net/ubuntu/+source/libpcap/+bug/1213173/+subscriptions -- Ubuntu-server-bugs mailing list Ubuntu-server-bugs@lists.ubuntu.com Modify settings or unsubscribe at: https://lists.ubuntu.com/mailman/listinfo/ubuntu-server-bugs
